Sucker-rod elevator



Patented Apr. 10,1928.Y

TES.

maze g .Y EnGAn n; Eciniinng'for'isELLnv-.Uia rnnnsrnvnma'; 'i i Application meaianumyw; 1924,. semaine. 689,266(

This invention is fortan elevator 'or'handling the sucker rod or sections'thereof in vand about oil well derricks. f

In'wells that are being pumped, itl is necessary to employ a sucker rod yelevator'l in the derrick, by means of A.which'the sucker rod, or sections of said rod, .may be manipr ulated.'A 'Asoriginally designed, suchele-y 'vators did not retainthe' sucker rod in' their grip nnderall circumstances, sometimes pervmittingthe rods to dropinto the hole, causdamage andv expense. Attempts Vhave `been madej Hto lprovide "safetyV catchesfor ythese elevators, frequentlyV lweakening .the elevator-'o'r necessitating Vsuch 'heavy`con struction as to make the elevators awkward" and clumsy tov handle.

The present invention' has fori-tg prins cipalj objectV to `provide an .elevatorfwhich fmay be made 4relatively light'and whichwill 5 fetfectivelfj'hold thesucker rod againstA acci- *dental'rleasef f Furtherjobjects' of' the invention fare fto provide, in 'a sucker 'rod elevator," a leadingin passage of ynovel design which will 'of 4'itself tend to prevent accidental release of thesucker rod, and -also to provide amov- 'able'locking pin so positionedl with respect YAto,'theleading-in slot that any movement of 'the 'suckerfrod toward released position tends to move or holdthe locking pin more effectively into or'in locking positiori.-Y

I' ..V"These' andV other'objects andl advantages are obtained by the present. invention, which 'is rvillustrated" in the accompanying drawin a`11din"which:

' igl is a top view ofv an' elevator embodying my invention; y Fig.A 2) is a longitudinal vertical sectlon in the plane of line'I'If-'II of Fig. 1; and

-`- Figj is atop planview of a slightly modied construction", H l v "In the drawings, l.ES-designates a' suitable body having transversely extending *trun-l nions thereon, over which the ends 7 of va suitable bail or other suspending means are litted, 'to' rotatably support-body. A1518'- for4 retaining l` the bail ends 7 in V(are pins place.

' VFormed inthe body isaverticalleadinginslotf9, Whoseouterjend is -located at one side of the center of the block, the slotcurving sharply some `distancein"from itso'uter e'ndfandv terminating Vin central vertical vopening r10, said slot therefor being `non l *radiali withV respect .to seid Opening" 'The locking p0sition.- y A knob Mis-secured; rod-19, and provides. manual 'means orre- `z-'zz' A tracting the locking member against` thev afcf ltionof the springl central vertical'opening may, if desired, have n a removable liner or bushing Vl1` therein, as

shown in Figs. l and 2: This'ibushing has a flanged upper end received in a recess in the vtop of body 5 to hold thel bushing against i 'downward movement, and `screws l2 may be utilized to hold the bushing in place. .Bushings of different sizes may', by this arrange? 65V ment, be inserted when necessary.

- The parts of'the'body-atthe peripheral' terminal-.oftheleading-in slotare'rounded, v 'as shown at5 to facilitate the guiding of `'Ehe' elevator onto the rod.4 "l

- In Figs. l 'and 2, the body'5 lhas 'aradia'll extension `13.' Ax.ra dially extending hole` 14` isv ormedinfthe'body 5.y and Vin the extension, Y'

19 that passes fthrough it, thefinne'rf'endof the `rod 'having a headv V20 thereon.; V. Carried onl this lrodis a llocking member 2l having a 4recess vtherein-'to receive the head-,20 onfro'd 119,1and having an offsetextensionfj22 that ,projects through hole ,1 5 into. leading-in slot .9 7 atthe curve .'thereoi this extension beingj'substantially ,tangential to` thefcentral opening.. Afcompression spring 23 surf urge the lockingv Soy fanas aware has not hereto-l lfore beenlproposed to util1Ze,= 1n suckerl `Inoperatiorng the sucker ,forced into -v the slot9, until itcontacts with the extendedk 'end 22of theflocking device. Upon being. further pushed, the sucker rod `willforceA vthe" extension rearwardlyuntilL-:the `sucker p rod canV pass-it andmove into the central I' hole.`T'hexend of thexextension 22 isf/pref# erably slightly beveled in *order to'allow-the vrounding rod 19 and confinedbetweenrmemf y ber A21.andbushing 16 serves, tofyieldably to theL outer endfof sucker rod tofinore readily clearity 'When i' having an offset extension thereon which projects through said offset hole into said slot, al spring for normally urging the locking member into projected position, and

means on said rod engaging said head for enabling the locking member to be drawn by.

such rod to retracted position.

7. Asucker rod elevator having a. vertical rod receivingopening, and a vertical out- Wardly extending leading-in slot communij eating With the vertical opening `in 1101i-,

radial relation thereto.

8. A sucker rod elevator having a vertical rod receiving opening,4 and an outwardly extending leading-in slot communicating With the vertical openin in non-radialrelation thereto., and a loc ing member operableV Within the juncture ot' the said slot and open-y ing. y

9. A sucker rod elevator having a vertically extending rod receiving opening, a curved leading-in slot lin communication With the opening, a looking member operable substantially Within the juncture of said slot and o opening, means for automatically Ina-in# taining the member in locking position, and means for manually moving saidmember to unlocked position.

' l0. A deviceofthe character disclosed,

comprising a body adapted to be applied to Work and having a verticalopening Within Y of merger of said'openings to reta-in the ,40

Work Within said iirst named opening.

In testimony whereof I ahx my signature..

l f EDGAR GREVE. 

